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module/*.ko: prune .data, global .rodata

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Evaluated every variable that lives in .data (and globals in .rodata)
in the kernel modules, and constified/eliminated/localised them
appropriately. This means that all read-only data is now actually
read-only data, and, if possible, at file scope. A lot of previously-
global-symbols became inlinable (and inlined!) constants. Probably
not in a big Wowee Performance Moment, but hey.

Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Signed-off-by: Ahelenia Ziemiańska <nabijaczleweli@nabijaczleweli.xyz>
Closes #12899
This commit is contained in:
наб
2022-01-15 00:37:55 +01:00
committed by GitHub
parent 7adc190098
commit 18168da727
147 changed files with 781 additions and 876 deletions
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cmd/zhack/zhack.c
+6 -7
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@@ -53,7 +53,6 @@
#include <zfeature_common.h>
#include <libzutil.h>
const char cmdname[] = "zhack";
static importargs_t g_importargs;
static char *g_pool;
static boolean_t g_readonly;
@@ -62,9 +61,9 @@ static __attribute__((noreturn)) void
usage(void)
{
(void) fprintf(stderr,
"Usage: %s [-c cachefile] [-d dir] <subcommand> <args> ...\n"
"Usage: zhack [-c cachefile] [-d dir] <subcommand> <args> ...\n"
"where <subcommand> <args> is one of the following:\n"
"\n", cmdname);
"\n");
(void) fprintf(stderr,
" feature stat <pool>\n"
@@ -99,10 +98,10 @@ fatal(spa_t *spa, void *tag, const char *fmt, ...)
}
va_start(ap, fmt);
(void) fprintf(stderr, "%s: ", cmdname);
(void) fputs("zhack: ", stderr);
(void) vfprintf(stderr, fmt, ap);
va_end(ap);
(void) fprintf(stderr, "\n");
(void) fputc('\n', stderr);
exit(1);
}
@@ -277,7 +276,7 @@ zhack_do_feature_enable(int argc, char **argv)
spa_t *spa;
objset_t *mos;
zfeature_info_t feature;
spa_feature_t nodeps[] = { SPA_FEATURE_NONE };
const spa_feature_t nodeps[] = { SPA_FEATURE_NONE };
/*
* Features are not added to the pool's label until their refcounts
@@ -374,7 +373,7 @@ zhack_do_feature_ref(int argc, char **argv)
spa_t *spa;
objset_t *mos;
zfeature_info_t feature;
spa_feature_t nodeps[] = { SPA_FEATURE_NONE };
const spa_feature_t nodeps[] = { SPA_FEATURE_NONE };
/*
* fi_desc does not matter here because it was written to disk